I had a nice staying at Feb's place. She provided me with all the instructions to commute from the airport to her place. Once there, it was easy to find the key in the apartment's mailbox.
The apartment itself is not big, but it is good enough if you will use it only to sleep after a day going around Bangkok.
I think the place is good located as from BTS On Nut station you can go anywhere.
Last thing to mention is that my flight was really late at the day I had to check out. So I asked Feb if I could leave my suitcase in the apartment and pick it up before going to the airport. She kindly asked her father to take care of it for me. He took it from the apartment and give it to me later.
I would recommend this place to anyone!